Sigvaris Compression sock the 151 Zurich Collection Sea Island Cotton Socks for Women – 15-20 mmHg The Zurich Collection by SIGVARIS offers Luxurious Graduated Compression Socks for men and women. The collection features the world’s finest yarns combined with our cutting-edge graduated compression fabrication and technology. Introducing the collection that currently offers two exclusive socks designed from Sea Island Cotton and Australian Merino Wool. Natural fibres offer consumers the everyday look and feel of luxury socks with the added benefits of graduated compression. The Zurich Collection is the newest addition to SIGVARIS’ WELL BEING assortment!